Fig 5. Comparison of total concentration losses for different types of tubes and tube treatments at 48 h of storage at +4°C.

Error bars represent 95% CI of the mean (N = 108 for the ordinary Eppendorf tubes, N = 54 for the Eppendorf Protein LoBind tubes, N = 18 for the rest). P-values were calculated using a two-tailed unpaired t-test.